This accurate one-pulse-per-second clock is made with a few common parts and driven from a 50 or 60 Hertz mains supply but with no direct connection to it. A beep or metronome-like click and/or a ...
Here is one basic circuit of a simple but accurate 1Hz timebase generator built around a standard Quartz clock circuit board. Just lift the clock PCB from any cheap quartz clock and carefully remove ...
A small portable device featuring timer, clock, and calendar functions, equipped with a simple and functional interface and a truly long battery life.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results